Transcript
Installation Instructions Document No. 129-401 June 1, 2005
SQM5… Reversing Actuators, with Multiple Analog Control Input Signals Product Description
SQM5x.xxxRxZx for 4 to 20 mA, 0 to 135 ohm and 0 to 10 Vdc input signals Actuator Torque:
Max Shaft Torque:
SQM50.2…
90 in/lb
AGA58.1
200 in/lb
SQM50.3…
90 in/lb
AGA58.3
220 in/lb
SQM50.4…
140 in/lb
AGA58.4
270 in/lb
SQM53.4…
200 in/lb
AGA58.7
400 in/lb
SQM56.5…
310 in/lb
SQM56.6…
400 in/lb
SQM… motors allow torque on either end of the AGA58.3 and AGA58.4 shafts. NOTE: For detailed information, see Technical Instructions 155-517P25.
Caution Notations CAUTION:
Equipment damage may occur if you do not follow the procedures as specified.
Installation Cover Removal
EA0564R1
Product Numbers
EA0568R1
Reversing actuator used to position flow control valves, butterfly valves, dampers, or any application requiring rotary motion with multiple analog input signals.
Figure 1.
Figure 2.
Rotational Direction Verification Actuator model numbers that end with “R” are factory configured for clockwise (cw), minimum to maximum rotation when facing the gear end of the actuator, or counterclockwise (ccw) rotation when facing the other end of the actuator. The gear end of the actuator is the side opposite of the visual position indicator.
Actuator Mounting SQM5… actuators can be mounted in any orientation. Optional base mounting brackets are available. SQM5… actuators can also be face mounted using self-tapping screws in combination with the various holes on the face of the actuator gear end.
Switch Adjustment SQM5…actuators are factory-wired with Switch I (maximum), Switch II (fully closed/economy position) and Switch III (minimum/low-fire). The individual switch cams I, II, and III are factory set to 90°, 0° and 10°, respectively. See Figures 3 and 4.
Use a Phillips screwdriver to loosen the two screws on the actuator cover corners. See Figure 1. Lift the screws and raise the cover. See Figure 2.
Item Number 129-401, Rev. 010
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Document No. 129-401 Installation Instructions June 1, 2005
ACTUATOR POSITION SCALE
SWITCH CAM I SET AT MAXIMUM
CAM DRUM RELEASE BUTTON
50
50
50
30
30
30
30
10
10
50
0
0 0
10 0
10 0 10
0
ACTUATOR POSITION INDICATING DIAL
ASZ... (1000 Ohm) FEEDBACK POTENTIOMETER
SWITCH CAM III SET AT MINIMUM
70
GEAR END
DIAL POINTER
SWITCH CAM II SET AT ZERO ("ECONOMY") CAM DRUM
ACTUATOR POSITION INDICATING POINTER
0
SINGLE SWITCH CAM POINTER
EA0561R3
DOUBLE SWITCH CAM POINTER
Figure 3. Component Identification on the Cam Drum Side of the SQM5…Actuator.
NOTE:
The single switch cam pointers are used together with the black scales when configured for ccw operation.
be manually rotated. After the shaft has been manually aligned to the closed position, re-engage the shaft by pushing the shaft release button downwards.
The double switch cam pointers are used together with the red scales when configured for cw operation.
Cam Drum Adjustment
The individual switch cams can be adjusted by hand or with the use of the tool attached to the outside of the hinged switch terminal protection lid. The adjustable range of the switches is limited by the potentiometer range. SQM5x.xxxRxZ3 actuators have a 90° potentiometer and the switches must be adjusted between 0° and 90°. SQM5x.xxxRxZ4 actuators have a 135° potentiometer and the switches must be adjusted between 0° and 135°.
Shaft Adjustment The actuator shaft can be disengaged by pressing the silver shaft release button. The shaft release button is located above the grounding screw, under the hinged terminal protection cover, and to the right of the auto/manual switch. After pressing the shaft release button in and slightly upward, the shaft can Page 2 of 6
Once the shaft has been set to the closed position, the cam drum must be manually aligned by pressing and holding the black cam drum release button (see Figure 3). Rotate the cam drum until the “0” mark on the actuator position scale (left scale on the cam drum) is aligned with the gray actuator position indicating pointer.
Position Indicating Dial Adjustment The actual position of the SQM5… actuator is indicated by the gray actuator position indicating pointer (see Figure 3). The position is also displayed by the indicating dial through the housing’s window. Ensure that the actuator position indicating dial is aligned with the actuator position scale. If necessary, rotate the dial in the clockwise direction. CAUTION: Turning the dial in the counterclockwise direction may loosen the potentiometer locking screw.
Siemens Building Technologies, Inc.
Document No. 129-401 Installation Instructions June 1, 2005
Grounding
Electrical Connection
To avoid electro-magnetic interference, SQM5… actuators must be grounded. The ground screw is located to the right of the AUTO/MAN switch (below the shaft release button).
SQM5… actuators are equipped with two removable conduit connection plates located on the upper corner of the gear housing. Each plate is provided with two threaded connections for 1/2-inch NPSM conduit connectors. The use of flexible stranded wire is recommended.
CAUTION: Disconnect circuit board wire marked 51 during high voltage testing. Reconnect it to the grounding terminal after the test.
NOTE: SQM5… Actuators require a single-source, single-phase power supply.
P
AGA56.9... SHIFT
LIN m
A
m
A
4...20 mA
m
A
12
M
A 6
m
A
50%
POS
ZF
10
or
ZF
=
75%
m
A m
0
20
MAX
18
m
A
POS
8
L1
A
ZL
14
Z
m
L
16
A
N
4
m
A
25% MIN
Y0...3
Y0...3
MIN 25% 50% 75% MAX
POS
REG OPE MAX
MIN MIN
MAX
MAX
J1
MIN
LIN
Y0...3
U4
W
M
B
Y0
R
(+2 V) 135 Ohm
1
M
2
Y3
0...2 V
4...20 mA
M
0...10 V
Y1
Y0...3
M
MIN MAX
0...20 mA
Y2
51
1
2
EA0557R4
M
I 11
1
21
II
21 12
12
2
22
13
3
III 13
3
23
IV 14
4
24
V 15
5
25
VI 16
6
0...20 mA
U3
0...10 V
for ccw rotation
2
4...20 mA
M common
black
1
N
J2 actuator switch I Maximum/High fire II "Economy"/Fully closed III Minimum/Low fire IV...VI Auxilliary
brown
shown in auto position
AUTO
blue
MAN
U1 U2
c b
26
ASZ... (1000 Ohm)
a
wire leads
Figure 4. Basic Functional Diagram of AGA56.9…
Siemens Building Technologies, Inc.
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Document No. 129-401 Installation Instructions June 1, 2005
U4
M
Y0
Y1
Y2
Y3
L1
P
L
N
A
Z
ZL OPE MAX MIN
MAX
POS
MIN
1 2 J2 U1...U3
3-POSITION SWITCH M
ZF
M
U1
U2
U3
LIN
JUMPERS
POT. METERS
MAN. AUTO.
EA0558R3
0
1 2 J1
AGA56.9A...
Figure 5. AGA56.9…… Terminal and Trim Potentiometer Boards. position is reached, terminal 23 (on switch III) will be energized to provide position feedback. Adjustment of switch III will determine the low-fire stop position. Switch III (low fire) must be set at a higher position than switch II (fully closed). Terminal ZL may be energized only after removing power from terminals A, Z, 13, and LR.
Commissioning Manual Operation 1.
Set the AUTO/MAN switch in the MAN position.
2.
Connect ground to the screw located below the shaft release button.
3.
Connect neutral to terminal N.
4.
Only terminal "L" must be powered to enable manual operation. The actuator can now be driven to the maximum (high fire) position (switch cam I) or the fully closed "economy position" (switch cam II) by using the toggle switch located to the left of the AUTO/MAN switch.
Automatic Operation 1. Set the AUTO/MAN switch in the AUTO position. 2. Connect ground to the screw located below the shaft release button. 3. Connect neutral to terminal N. 4. Connect line voltage at all times to terminal L to provide power to the electronic circuit board. 5. Connect line voltage to terminal L1 to provide power when modulating. Connect line voltage to Terminal L1 only after removing power on terminals A and Z (otherwise actuator damage may result). 6. Connect line voltage to terminal A to drive the actuator to the maximum (high fire purge) position. Once the maximum position is reached, terminal 11 (on switch I) will be energized to provide position feedback.
8.
Connect line voltage to terminal Z to drive the actuator to the fully closed/economy position (switch II). CAUTION: Under no circumstances should terminals A and Z be powered at the same time. Actuator damage will occur.
9. Connect the input control signal wires to the appropriate terminals. See Figure 4.
Modulation Adjustment The blue trim potentiometers allow the adjustment of the minimum (zero) and maximum (span) positions. The factory setting of the MIN trim potentiometer is rotated fully counter clockwise. The factory setting of the MAX trim potentiometer is rotated fully clockwise.
Zero Adjustment Set the OPE/MAX/MIN slide switch to MIN (see Figure 5). The blue MIN trim potentiometer can now be gently adjusted to the required minimum position. Return the OPE/MAX/MIN slide switch to OPE for operation.
7. Connect power to terminal ZL to drive the actuator to the minimum (low-fire) position. Once the minimum Page 4 of 6
Siemens Building Technologies, Inc.
Document No. 129-401 Installation Instructions June 1, 2005
Span Adjustment
g ntiome ter sett in
Switch I setting
Example of limit switch I and III and trim potentiometer settings
MAX tr
MIN
trim
g
ettin
er s
met
tio oten
p
Switch
Input Signal Override
ing
III sett
EA0562R1
0 deg.
Figure 6. Switch Cam and Trim Potentiometer Setting. NOTE:
The actual minimum and maximum modulating range is determined by either the setting of the MIN and MAX trim potentiometers, or the setting of Switch Cam III (Minimum) and Switch Cam I (Maximum). The actuator can never modulate outside of the range set by switch cam I and III. If the MIN and MAX trim potentiometers are set outside the setting range of switch cams I and III, then the switch cam settings determine the modulating range (See Figure 6).
NOTE: Switch Cam I must not be set higher than: 90° when using feedback potentiometers ASZxx..803, or ASZxx.30; 135° when using feedback potentiometers ASZxx.833, or ASZxx.33
Electronic Linearization Function Butterfly valves have non-linear flow characteristics. Near the fully closed position, a small change in the valve’s position will produce a very large change in flow. Furthermore, near the fully open position, a large position change will produce a relatively small change in flow. Siemens Building Technologies, Inc.
For example (based on a 90° modulating range), a change in input signal from 4 to 8 mA will cause a rotational movement of 11.25°. An equal change from 16 to 20 mA will cause a rotational movement of 45°. Thus, with the linearization function enabled, the change in flow is closely proportional to the change in input signal. With jumper J1 in position 2 (lower position), the linearization function is disabled. When disabled, the rotational movement of the shaft is proportional to the input signal.
im pote
90 deg.
Set the OPE/MAX/MIN slide switch to MAX. The blue MAX trim potentiometer can now be gently adjusted to the required maximum position. Return the OPE/MAX/MIN slide switch to OPE for operation.
The linearization function is intended to minimize the initial steep flow curve characteristics of a typical butterfly valve. With jumper J1 in position 1 (upper position), the linearization function is enabled. Consequently, the actuator will make smaller rotational movements when subjected to lower input signals and larger rotational movements when subjected to higher input signals.
Line voltage to terminal P will drive the actuator to a preset adjustable position, overriding all modulating input signals. Use the potentiometer marked POS to adjust the override position to any setting within the setting range of switch cams I and III.
Parallel Operation To configure the actuator for parallel operation, set the jumper J2 in position 1 (upper position). Input signals Y0, Y1, Y2 or Y3 are directly shunted to output signals U1, U2 and U3, respectively. All output signals are available regardless of which input signal is applied.
Master/Slave Operation To configure the actuator for master/slave operation, set J2 in position 2 (lower position). The output signals U1, U2 and U3 reflect actual shaft position.
Split Ranging AGA56.9… circuit boards have a modulating signal shift feature, which can be used for split ranging. If no signal is present on Y0, Y1, Y2 or Y3, the actuator will modulate through the full rotational range in response to a 12 to 20 mA signal applied at ZF. If a maximum signal is present on Y0, Y1, Y2, or Y3, then the actuator will modulate through the full rotational range in response to a 4 to 12 mA signal applied at ZF. (Maximum signal can be easily achieved by bridging terminals U4 and Y0.) See Figure 9.
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Document No. 129-401 Installation Instructions June 1, 2005 It is possible to configure the actuator for split range operation 12 to 4 mA and 20 to 12 mA. Consult your Combustion Products Sales Representative for details authorized Siemens Building Technologies.
50% 25%
EA0560R1
MIN
Press the cover into place and then press the screws inward and tighten (See Figure 11).
MIN 25% 50% 75% MAX
Y0...3
EA0563R1
75%
Lift the two screws on the cover corners and slide the cover end into the groove at the gear end of the actuator (See Figure 10).
EA0567R1
MAX
Cover Installation
20 m 18 A m 16 A m 14 A m 1 A 4 6 8 1 m m m 0m 2m A A A A A
NOTE:
Figure 10.
Figure 9. Split Ranging.
Figure 11.
The installation is now complete.
Dimensions 5/8 (16)
ALLOW 3.5" SPACE FOR COVER REMOVAL
Pg 13.5 / 1/2" NPSM
1-3/16 (30)
1/4 (6)
M8
1-3/16 (30)
5-1/4 (133)
1-7/16 (36)
3/8 (10)
EA0522R1
2-5/8 (67)
7-1/16 (180) 7-1/16 (180)
1/16 (1)
4-7/16 (113)
1/4"-20 UNC
1/8 (3.5)
3 -1/8 (80)
EA0542R2
5-3/16 (132)
5/16 (8.5)
6-7/16 (164)
5/16 (7.5)
Figure 6. SQM5x.xxxRxx Dimensions in Inches (Millimeters). Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2005 Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. 1000 Deerfield Parkway Buffalo Grove, IL 60089-4513 U.S.A.
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Document No. 129-401 Country of Origin: US
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Represented By:
POWER EQUIPMENT COMPANY 2011 Williamsburg Road Richmond, VA 23231 Ph. 804-236-3800 Fx. 804-236-3882 www.peconet.com
